Remove unused log4j jars am: c96c1c8ae2 am: 864702ebd6 am: 7032b0af34 am: 8023634a50 am: 0b9a14a028

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/tools/+/16456597

Change-Id: I85b389ac2b75f0a742a54419b5ab17ca5618e8cd